Suspension-spring for vehicles.



k] FULLER.

SUSPENSION SPEHNG FOR VEHICLES.

AP LICATION HLH') NOV 12.1914.

Patented May 25, 1915.

UNITED STATES PATENT GFFICE.

EUGENE FULLER, 0F PROVIDENCE, RHODE ISLAND, ASSIGNOR OF ONE-THIRD T0 CHARLES F. BUTTERW'ORTH, OF PAW'IUCKET, RHODE ISLAND, AND ONE-THIRD TO JOSEPH WEBB, OF THORNTON, RHODE ISLAND.

SUSPENSION-SPRING FOB VEHICLES.

Application fi1ed November 12, 1914.

T n. l whom it may [0221213771 lie it known that l', EUGENE FULLER, a citizen of the United States, and resident of the city of Providence in the county of Providence and State of rihodc Island, have invented certain new and useful Improvements in Suspension-Springs for Vehicles, of which the following is a specification.

his invention relates to auxiliary springs arranged as shock absorbing devices for re hicles. of the class adapted to coiiperate with the main spring of the vehicle to prevent excessive reaction of the same, and the inveir tion has for its object to provide a yieldable member at the ends of the springsdroni which spring ends are suspended, one end of each of said members being supported from a base, and its opposite end supported on the back of the main spring, the end of the main spring being connected to said member at a point intermediate its ends for the pur pose of obtaining greater yieldab'ility in and. preventing excessive rebound of the spring.

A further object of the invention is to increase the yield-ability of said supporting member by inter-posing one or more coils therein. intermediate its ends.

The invention but ier consists in thcfornn ing of a coil in said member to which the end of the main spring is connected.

Vith these and other objects in View, the invention consists of certain novel features of construction, as will be more fully de' scribed, and particularly pointed out in the appended claims.

In the accompanying drawings: Figure 1 -shows my improved shock absorbing device as applied to the ends oi a hransverscly arranged spring. Fig. 2is a plan view showing the arrangen'ient of the spring members, the same being enlarged over that shown in Fig. 1. Fig. 3is a. modification illustrating the sin'iplcst possible form of my improved device as applied to a. vehicle spring.

The particular form of shock absorbing device herein illustrated is more particularly adapted for use one vehicle which is provided with transverse springs, but I do not limit its use to this sprin arrangement, and the device may be applied to such a vehiclc by the use of theparts already in use in the suspension of the spring and without drilling holes in the parts of the vehicle.

Specification of Letters Patent.

Patented May 25, 1915.

Serial No. 871.650.

VVit-h reference to the drawings 10 designates the auxiliary spring or shock absorbing device which is preferably constructed of two spring wire members arranged spaced apart and side by side and to lie substantially parallel with the axis of the spring. The end 13 on each of these members is preterably bent into the form of an eye through which a bolt 15 is passed into the bracket 16 and by which they are pivotally supported, the bracket being preferably secured to the axle 17 of the vehicle. Each wire from this pivot point is led forward and slightly upward and wound into a large coil 18 having one or more convolutions formed on the inner side thereof, then leaving the inner edge of this coil the wire again extends forward and is again Wound into two or more convolutions as at 19, this time on the outside of the wire, from the outer edge of this coil the wire again extends forward forming an elongated arm portion 20, the extremities of which are bent into the form of an eye, see Fi 1, to receive the bolt 22, which serves as a bearing on which the contact-roll 23 is adapted to rotate.

In order to connect the main spring 24 of the vehicle to this auxiliary spring or shock absorbing device, I preferably insert a bushing 25 through the coils 19 of both of the side members, see Fig. 2, and then pass the bolt 26 through the links 27 and through the bushing, the opposite end of the links being connected by the bolt 28 to the end 29 of said spring. By this arrangement it will be seen. that the roller 23 at the inner end of the auxiliary spring rests upon the back of the main spring 24 and rolls back and L :th as the spring vibrates. In some cases it is found when the main spring recoils sharply that it is apt to throw the roll 23 from contact with the back thereof and to prevent such action I have formed a U shaped strap 30 positioned around beneath thespring and connected at its ends 31 to the pivot bolt 22.

It is found in practice that even a straight member such as that illustrated in Fig. 3 will be quite effective as a shock absorbing device for redueingthe recoil or rebounding action upon the main spring 2%, but when greater resiliency is desired any number of coils such as those illustrated at 18 and 19 or even more may be employed with good results.

' ill practice that by constructrcred shock absorbing device of rirt members, each having one in construction, renders the yield-able yet strong, durable and as this arrangement per connecting of the device to either n hanger support 16, it thus pret. i all swaying motion of the which is supported from this Cl\'i\,& thron h the spring and links 27.

.t r nature of my improved construc- .eond coil 19 in addition to p .d flexibility, also SBIVcS to prori e a convenient bearing eye for receiving the iger bolt 2-6 from which the main n mo"e jl shock. absorbing device is simple 'in construction and efieoaeration and may be readily applied 1 .nlilCli, of the transverse spring constr u-z ain by using the original brackets and without the necessity of drilling holes its parts and by its use the rid of the vehicle are greatly imicle spring the combination. wring of an auxiliary spring nivotally supported on a and its opposite end been id main spring, the end of the point intermediate the d. spring for vehicles commain spring, an auxiliary spring and of E. d main spring, each of id auxilii ngs having one (11d piv 4e supported on av :vehicle element and Le endbearing against said main t! i ain spring being supported in the auxiliary spring at a pointinterneriliz': aids.

15 niponnd spring for vehicles @011? main s ring, an auxiliary spring end said. main spring, e of win auxiliary s having. one end prv nnst said. main I oeing supported at point inter auxiliary spring, and a. coil in tic auxiliary spring between ti '2 pi voted point and. the point of support of 2; ii main spring.

A co pound spring for vehicles comnpported from the aux e elementand prising a main spring, an auxiliary spring at either end of said spring, each of said auxiliary springs having one end pivotally supported on a vehicle element and itsopposite end bearing against said main spring, the main spring being supported from the auxiliary spring at point intermediate the ends. thereof, and means on said opposite end for preventing the auxiliary spring from leaving the main spring as the latter recoils.

5. A shock absorbing device comprising a ehicle spring, a yieldable member at one end of the vehicle spring, said member having one end supported by a vehicle element,

and its opposite end supported by said spring, and means connecting one end of said spring to said member at a point interspaced apart resilient side arms arranged to lie approximately parallel with the axis of the vehicle spring, each of said arms being provided with one or more coils intermediate its ends, one end of said pair being adapted to be pivotally supported from the vehicle axle and its opposite ends to be supported on the back of the s 'iring and means for connecting the end of the spring to said arms at a point intermediate their ends.

8. A shock absorber comprising a pair of spaced apart resilient side arms arranged to lie approximately parallel with the axis'of the vehicle spring, each of said ar'msbeing provided with one or more coils intermediate its ends. one end of said pair being adapted to be pivotally SUPPOItGd'fK'OIH the vehicle aisle and its opposite ends to be supported 6n the ack ot' the sg'iring and means for connect. 5 the ml oi the spring to said arms thr igh or. of said coils.

In testiinoi'rv hereof I affix my signature in presence of two Witnesses.

EUGENE FULLER. Witnesses v Howano E. iiannow,

A. F. Mace any. 

